<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script type="text/javascript" src="fun.js"></script>
</head>
<body >
		文件的内容：<label id = ></label>

		<br>
		<input type="button" onclick="get_file_fun();"  value="获取内容" />
		
</body>
</html>